Automatic engaging and disengaging mechanism for numerators for sawing-machines.



No. 789,989. A PATBNTED MAY 16, 1905. F. MEYER.

AUTOMATIC ENGAGING AND DISENGAGING MECHANISM FOR NUMERATORS FOR SAWINGMACHINES.

APPLIDATION FILED NOV. 11,1904. 2 SHEETS SHE 1' Inventor Witn ess es.

No. 789,989. PATENTED MAY 16, 1905.

Y F. MEYER.

AUTOMATIC ENGAGING AND DISENGAGING MECHANISM FOR NUMERATORS FOR SAWINGMACHINES.

APPLICATION FILED NOV.11,1904.

2 SHEBTS-SHBET 2.

Fig. 3.

Inven t0r Witnesses. 2 w 62i,

UNITED STATES Patented May 16, 1905.

PATENT OFFICE.

FRANZ MEYER, OF GLAUCHAU, GERMANY.

SPECIFICATION forming part of Letters Patent No. 789,989, dated I/Iay16, 1905.

Application filed November 11, 1904. Serial No. 232,332.

To all whom it nuty concern:

Be it known that I, FRANZ MEYER, asubject of the German Emperor,residing at Glauchau, in the Kingdom of Saxony and Empire of Germany,have invented certain new and useful Improvements in Means forAutomatically Engaging and Disengaging Sawing-Machine Numerators, ofwhich the following is a specification.

This invention relates to mechanism for antomatically engagingnumerators in sawingmachines destined to determine the cubic contentsand also the length of round timber as soon as the latter reaches thesaws of the mill and to mechanism for automatically disengaging suchnumerators when the log leaves the mill. This engagement anddisengagement is effected by means of a shaft fixed to two lever-arms,which latter are connected to a coupling member removable on the mainshaft of the numerating device acted upon by a spring and also areconnected with a weighted roller in such a manner that the latter on thelog entering the mill is lifted by said log. In consequence thereof theshaft referred to above is freed from the weight of said roller and thecoupling member displaced by the spring acting on it, thus coupling themain shaft of the numerator with a chain-wheel arranged on said mainshaft and connected to one of the transport-rollers of the mill.However, on the removal of the round timber from the mill the weightedroller sinks down, thereby causing the shaft to rotate and the couplingmember to be removed contrary to the tension of the spring, and thusdisengaging the coupling previously effected.

In the annexed drawings the improved device is represented. Figure 1 isa front view of the numerator attached to the frame of the mill; Fig. 2,a back view of the numerator; and Fig. 3, a side view thereof, moreparticularly showing the disengaging mechanism.

1 is the main shaft of the numerator, rotated by the transport-roller39, Fig. 1, by means of the chain-wheel 40, chain' 41, and chainwheel35, Fig. 3, said transport-roller 39 being rotated by the round timber26 traversing the mill. Thus thelongitudinal displacement of the roundtimber is transmitted to the shaft 1. To the latter the wheel 2 isfixed, which on its rotation with the main shaft 1 by means of the pins3 4 oscillates the lever 5, loosely fixed to the shaft 42, provided witha pawl 6. Thus the rotation of the main shaft is transmitted to theratchet-wheel 7, the bevel-wheels 8 9, and to the numerator 10,measuring the length of the round timber, the shaft 19 of the numerator20 being rotated by means of the pins 11 12, lever 21', pawl 13,ratchetw7heel 14, pinions 16, and the bevel-wheels 1 18.

As the drop of the lever 21 is regulated by the position of the check orstop 22 of the segment 23, pivoted at 24, and as this position may beregulated by the actual diameter of the round timberas, for instance, bythe second transport-roller 43, which is arranged to be displaced inheight by suitable means to wit. the rack 44, pinion 45, wheel 46, chain47, chain-wheel 48, pinions 49 50 51the numerator actually measuresthe-cubic contents of the round timber.

Now for the purpose of disengaging or setting the numerators 1O 20 outof operation as soon as the log has traversed the mill, the weightedroller 25 is connected to a lever 28 by means of a chain 27, cord, orthe like. This lever 28 is fixed to the shaft 30, pivoted at 31 32 tothe frame of the numerating device. Also fixed to said shaft is a lever33, at its end arranged as a fork and engaging the groove of thecoupling member 34, form-- ing the hub of the chain-wheel 35. Thechainwheel 35 is displaceable on the shaft 1 and is able to rotatefreely on the latter as long as the teeth 36 of the hub are not inengagement with the corresponding grooves of the part 37, keyed to theshaft 1.

The operation of the device is as follows: When the round timber 26reaches the saws of the mill, the weighted roller 25 is lifted by theround timber and slides upon the latter. In consequence thereof thelever 28 and the shaft 30 are discharged, this in turn causing thespring 38 to force the chain-wheel 35 with its hub against the part 37,so that the pointed teeth 36 engage the corresponding gaps of said part.Consequently the coupling between the wheel 35, which, as stated above,is rotated by the transport-roller 39 through the medium of suitablemechanism, and the shaft 1 is effected-vl a, wheel 35 is also rotated,so that the two numerators and are operated by the shaftl in the mannerdescribed above. Now as soon as the round timber 26 has traversed themill the roller is not carried by the round timber any more, but,moreover, sinks down and draws the lever 28 downward. In consequencethereof shaft 30, Fig. 3, and also the lever 35 are turned in adirection contrary to thatof the hands of a watch, chain-wheel 35,together with its hub, moved to the left contrary to the tension of thespring 38, and consequently the coupling between the wheel 35 and theshaft 1 disengaged.

Having now fully described my invention, I declare that what I claimis* 1. In mechanism for automatically engaging and disengagingnumerators in sawingmachines the combination of a shaft 30 and atwo-armed lever 28, 33 pivoted on said shaft, a weighted roller 25connected to one of the said lever-arms 28, a coupling member 34regulated by a spring 38 arranged on the main shaft 1 of the numeratingdevice connected to said second lever-arm 33 and adapted to be displacedon said main shaft 1 on the round log entering and leaving the millrespectively, substantially as set forth.

2. In mechanism for automatically engaging and disengaging numerators insawingmachines the combination of a shaft 30 and a two-armed lever 28,33 pivoted on said shaft, a weighted roller 25 connected to one of thesaid arms 28, of a coupling member 34; and a chainwheel 35 regulated bya spring 38 arranged on the main shaft 1 of the numerating deviceadapted to be displaced on said main shaft 1, said main shaft 1 adaptedto be coupled with said chain-wheel 35 on the round timber entering themill and adapted to be disengaged therewith on the round timber leavingthe mill, substantially as set forth.

3. In mechanism for automatically engaging and disengaging numerators insawingmachines the combination of a shaft 30 and a two-armed lever 28,pivoted on said shaft, a weighted roller 25 connected to one of the saidarms 28, a chain-wheel 35 displaceably arranged on the main shaft 1 ofthe numerating device regulated by a spring 38, a coupling member 3 1integral with said chain-wheel 35 adapted to engage a correspondingcoupling member 37 keyed to the main shaft 1 on the round timberentering the mill and said coupling members adapted to disengage on theround timber leaving the mill,substantially as set forth.

4:. In mechanism for automatically engaging and disengaging numeratorsin sawingmachines the combination of a shaft 30 and an angle-lever 28,33 pivoted on said shaft, a weighted roller 25 connected to one of thesaid lever-arms 28, a chain-wheel displaceably arranged on the mainshaft 1 of the numerating device regulated by a spring 38 and connectedto one of the transport-rollers of the mill, a coupling member 34integral with said chain-wheel 35 adapted to engage a correspondingcoupling member 37 keyed to the main shaft 1 on the round timberentering the mill and said coupling members adapted to disengage on theround timber leaving the mill, substantially as set forth.

5. In a mechanism for automatically engaging and disengaging numeratorsof sawingmachines, the combination of a main shaft, a numerating devicedriven thereby, a clutch mechanism mounted on said main shaft, wherebysaid numerating device may be thrown into and out of operation, and aweighted roller serving by its engagement and disengagement with thematerial being sawed to throw said clutch into and out of mesh.

6. In a mechanism for automatically engaging and disengaging numerator-sof sawingmachines, the combination of a main shaft, a numerating device,means for operating said numerator, clutch mechanism for said operatingmeans whereby said numerator may be thrown into and out of operation,and means serving by its engagement and disengagement with the lumberbeing sawed to throw said clutch mechanism into and out of mesh.

7. In a mechanism for automatically engaging and disengaging numeratorsof sawingmachines, the combination of a numerator, and means serving byits engagement and disengagement with the material being sawed to throwsaid numerator into and out of operation.

In testimony whereof I affix my signature in presence of two witnesses.

FHA NZ M EY E R.

Witnesses:

(Jr. I\IENZEL, FR. \Vumnok.

